稳健性(进化)
角动量
光学
卷积神经网络
鉴定(生物学)
物理
拓扑量子数
湍流
拓扑(电路)
计算机科学
人工智能
算法
数学
量子力学
生物化学
化学
基因
热力学
组合数学
生物
植物
作者
Yiwen Zhang,Wenqian Zhao,Tianxu Xu,Yongxiong Ren,Runzhou Zhang,Zhongqi Pan,Yang Yue
出处
期刊:Optics Express
[The Optical Society]
日期:2023-12-20
卷期号:32 (2): 1941-1941
被引量:5
摘要
Due to the unique features, orbital angular momentum (OAM) beams have been widely explored for different applications. Accurate determination of the topological charge (TC) of these beams is crucial for their optimal utilization. In this paper, we propose a method that combines adaptive image processing techniques with a simple, parameter-free attention module (SimAM) based convolutional neural network to accurately identify the TC of high-order superimposed OAM beams. Experimental results demonstrate that under the combined influence of non-extreme light intensity and turbulence, it can achieve >95% identification accuracy of TCs ranging from ±1 to ±40. Moreover, even under partial-pattern-missing conditions, our method maintains an accuracy rate of over 80%. Compared with traditional attention mechanisms, SimAM does not require additional network design, significantly reducing the computational costs. Our approach showcases remarkable efficiency, robustness, and cost-effectiveness, making it adaptable to challenging factors such as non-uniform lighting and partially occluded light paths. This research provides a new direction for recognizing OAM modes with valuable implications for the future of communication systems.
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